Why WAV? Because MP3s and AACs (the default audio codecs for most web videos) lose data to save space. WAV files retain the original audio quality bit-for-bit and are essential for DJs, music producers, remix artists, and audiophiles.
Adding -f bestaudio --extract-audio --audio-format wav selects the best audio stream and outputs a WAV file. niconico to wav
| Alternative | Quality | Legal Status | |-------------|---------|---------------| | (official offline viewing within app) | AAC 320kbps | Legal, but locked to Niconico’s app | | Buy the song on Bandcamp/BOOTH (many Niconico producers sell FLAC/WAV) | True Lossless | Legal & supports the artist | | Spotify/Apple Music (if available) | OGG/AAC 256-320kbps | Streaming only, no offline WAV | | Listen on Niconico with high-quality mode | AAC 320kbps | No conversion, but online only | Why WAV
only exists if the uploader originally provided a FLAC or WAV and Niconico’s transcoder didn’t crush it (which it usually does). For 99% of content, your "Niconico to WAV" result will be a WAV container holding AAC-sourced audio. Part 3: Legal and Ethical Considerations This is a gray area. Niconico’s terms of service (Article 11, typically) prohibit unauthorized reproduction or downloading of content without permission. However, Japanese copyright law (like many countries) allows for "private use" copying in limited circumstances. Part 3: Legal and Ethical Considerations This is a gray area
Niconico (ニコニコ動画) is Japan’s largest video-sharing platform, famous for its unique "comment" overlay system (bullet screen) and a massive library of Vocaloid songs, game soundtracks, doujin music, and live performances. However, unlike YouTube or Spotify, Niconico is not primarily designed for offline audio listening.